The Promoter Targeting Sequence mediates epigenetically heritable transcription memory

Gespeichert in:

Bibliographische Detailangaben
Zeitschriftentitel:	Genes & Development
Personen und Körperschaften:	Lin, Qing, Chen, Qi, Lin, Lan, Zhou, Jumin
In:	Genes & Development, 18, 2004, 21, S. 2639-2651
Format:	E-Article
Sprache:	Englisch
veröffentlicht:	Cold Spring Harbor Laboratory
Schlagwörter:	Developmental Biology Genetics

Details
Zusammenfassung:	<jats:p>Large gene complexes frequently use “specialized” DNA elements to ensure proper regulation of gene activities. The Promoter Targeting Sequence (PTS) from the <jats:italic>Abdominal-B</jats:italic> locus of the <jats:italic>Drosophila</jats:italic> Bithorax complex overcomes an insulator, and facilitates, yet restricts, distant enhancers to a single promoter. We found that this promoter-targeting activity is independent of an enhancer's tissue or temporal specificity, and can be remembered in all somatic cells in the absence of promoter activation. It requires an insulator for its establishment, but can be maintained by the PTS in the absence of an insulator. More importantly, the promoter-targeting activity can be remembered after the transgene is translocated to new chromosomal locations. These results suggest that promoter targeting is established independent of enhancer activity, and is maintained epigenetically throughout development and subsequent generations.</jats:p>
Umfang:	2639-2651
ISSN:	0890-9369 1549-5477
DOI:	10.1101/gad.1230004